Toronto Downtown, Ontario, Canada Air Quality

Monitoring Station · Bay Street Corridor, Canada
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
43 3am
59
43
43 6am
43
23
23 9am
16
16
14 12pm
14
14
14 3pm
16
16
— 6pm
—
—
— 9pm
—
—
— 12am
—
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Station readings
59
CAMS model adj -11
54
54
54
54
54
34
34
27
27
25
25
25
25
27
27

Air Quality Forecast (24h)

PM2.515.9 µg/m³ ×1.1 WHO
Moderate
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Nearby Monitoring Stations

53
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 13.1 µg/m³
50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
46
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 11.0 µg/m³
50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
40
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 9.6 µg/m³
26
canada-toronto-richmond-street-west
1.4 km PM2.5: 6.3 µg/m³
74
Wood Glen
9.3 km PM2.5: 23.2 µg/m³

Nearby Cities

55 Bay Street Corridor 55 Church-Yonge Corridor 55 North St.James Town 55 Kensington-Chinatown 55 Annex 55 Moss Park 55 Rosedale-Moore Park 55 Trinity-Bellwoods 55 Niagara

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T06:25 UTC.